Christmas tree ornament



FIG. 1 is a front perspective view of a christmas tree ornament showing my new design;

FIG. 2 is a rear elevational view thereof, in a closed position;

FIG. 3 is a front elevational view of FIG. 2, the side view being substantially similar;

FIG. 4 is a top plan view of FIG. 2;

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a christmas tree ornament, as shown and described. 